kernel: split patches folder up into backport, pending and hack folders

* properly format/comment all patches
* merge debloat patches
* merge Kconfig patches
* merge swconfig patches
* merge hotplug patches
* drop 200-fix_localversion.patch - upstream
* drop 222-arm_zimage_none.patch - unused
* drop 252-mv_cesa_depends.patch - no longer required
* drop 410-mtd-move-forward-declaration-of-struct-mtd_info.patch - unused
* drop 661-fq_codel_keep_dropped_stats.patch - outdated
* drop 702-phy_add_aneg_done_function.patch - upstream
* drop 840-rtc7301.patch - unused
* drop 841-rtc_pt7c4338.patch - upstream
* drop 921-use_preinit_as_init.patch - unused
* drop spio-gpio-old and gpio-mmc - unused

Signed-off-by: John Crispin <john@phrozen.org>

1 files changed, 118 insertions, 0 deletions

diff --git a/target/linux/generic/pending-4.9/306-mips_mem_functions_performance.patch b/target/linux/generic/pending-4.9/306-mips_mem_functions_performance.patch
new file mode 100644
index 0000000000..b3d319cbc4
--- /dev/null
+++ b/target/linux/generic/pending-4.9/306-mips_mem_functions_performance.patch
@@ -0,0 +1,118 @@
+From: Felix Fietkau <nbd@nbd.name>
+Subject: [PATCH] mips: allow the compiler to optimize memset, memcmp, memcpy  for better performance and (in some instances) smaller code
+
+lede-commit: 07e59c7bc7f375f792ec9734be42fe4fa391a8bb
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+ arch/mips/boot/compressed/Makefile |  3 ++-
+ arch/mips/include/asm/string.h     | 38 ++++++++++++++++++++++++++++++++++++++
+ arch/mips/lib/Makefile             |  2 +-
+ arch/mips/lib/memcmp.c             | 22 ++++++++++++++++++++++
+ 4 files changed, 63 insertions(+), 2 deletions(-)
+ create mode 100644 arch/mips/lib/memcmp.c
+
+diff --git a/arch/mips/boot/compressed/Makefile b/arch/mips/boot/compressed/Makefile
+index 90aca95fe314..3cd3b391ef49 100644
+--- a/arch/mips/boot/compressed/Makefile
++++ b/arch/mips/boot/compressed/Makefile
+@@ -23,7 +23,8 @@ KBUILD_CFLAGS := $(shell echo $(KBUILD_CFLAGS) | sed -e "s/-pg//")
+ KBUILD_CFLAGS := $(filter-out -fstack-protector, $(KBUILD_CFLAGS))
+ 
+ KBUILD_CFLAGS := $(LINUXINCLUDE) $(KBUILD_CFLAGS) -D__KERNEL__ \
+-	-DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull"
++	-DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull" \
++	-D__ZBOOT__
+ 
+ KBUILD_AFLAGS := $(LINUXINCLUDE) $(KBUILD_AFLAGS) -D__ASSEMBLY__ \
+ 	-DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) \
+diff --git a/arch/mips/include/asm/string.h b/arch/mips/include/asm/string.h
+index 29030cb398ee..7b737f9b6d58 100644
+--- a/arch/mips/include/asm/string.h
++++ b/arch/mips/include/asm/string.h
+@@ -140,4 +140,42 @@ extern void *memcpy(void *__to, __const__ void *__from, size_t __n);
+ #define __HAVE_ARCH_MEMMOVE
+ extern void *memmove(void *__dest, __const__ void *__src, size_t __n);
+ 
++#ifndef __ZBOOT__
++#define memset(__s, __c, len)					\
++({								\
++	size_t __len = (len);					\
++	void *__ret;						\
++	if (__builtin_constant_p(len) && __len >= 64)		\
++		__ret = memset((__s), (__c), __len);		\
++	else							\
++		__ret = __builtin_memset((__s), (__c), __len);	\
++	__ret;							\
++})
++
++#define memcpy(dst, src, len)					\
++({								\
++	size_t __len = (len);					\
++	void *__ret;						\
++	if (__builtin_constant_p(len) && __len >= 64)		\
++		__ret = memcpy((dst), (src), __len);		\
++	else							\
++		__ret = __builtin_memcpy((dst), (src), __len);	\
++	__ret;							\
++})
++
++#define memmove(dst, src, len)					\
++({								\
++	size_t __len = (len);					\
++	void *__ret;						\
++	if (__builtin_constant_p(len) && __len >= 64)		\
++		__ret = memmove((dst), (src), __len);		\
++	else							\
++		__ret = __builtin_memmove((dst), (src), __len);	\
++	__ret;							\
++})
++
++#define __HAVE_ARCH_MEMCMP
++#define memcmp(src1, src2, len) __builtin_memcmp((src1), (src2), (len))
++#endif
++
+ #endif /* _ASM_STRING_H */
+diff --git a/arch/mips/lib/Makefile b/arch/mips/lib/Makefile
+index 0344e575f522..33a0211e954a 100644
+--- a/arch/mips/lib/Makefile
++++ b/arch/mips/lib/Makefile
+@@ -4,7 +4,7 @@
+ 
+ lib-y	+= bitops.o csum_partial.o delay.o memcpy.o memset.o \
+ 	   mips-atomic.o strlen_user.o strncpy_user.o \
+-	   strnlen_user.o uncached.o
++	   strnlen_user.o uncached.o memcmp.o
+ 
+ obj-y			+= iomap.o
+ obj-$(CONFIG_PCI)	+= iomap-pci.o
+diff --git a/arch/mips/lib/memcmp.c b/arch/mips/lib/memcmp.c
+new file mode 100644
+index 000000000000..35ef1646286e
+--- /dev/null
++++ b/arch/mips/lib/memcmp.c
+@@ -0,0 +1,22 @@
++/*
++ *  copied from linux/lib/string.c
++ *
++ *  Copyright (C) 1991, 1992  Linus Torvalds
++ */
++
++#include <linux/module.h>
++#include <linux/string.h>
++
++#undef memcmp
++int memcmp(const void *cs, const void *ct, size_t count)
++{
++	const unsigned char *su1, *su2;
++	int res = 0;
++
++	for (su1 = cs, su2 = ct; 0 < count; ++su1, ++su2, count--)
++		if ((res = *su1 - *su2) != 0)
++			break;
++	return res;
++}
++EXPORT_SYMBOL(memcmp);
++
+-- 
+2.11.0
+